Roof construction.



. H. GRIFFIN.

vWWF CONSTRUCTION.

A TORVEVS Patented Das.' 18, i917.

' i AMES-Hanvniremrriiuor livnvir-Yhom, NY.

` 'inoofooNsTRUorrIoim resident of the city of New York, borough ofM-anh'at-tamf-in'tliecounty fand State of'`l New York, have invented a new and Improved naar'etant-neem;@renalichef01:

lowing is a full, clear, and exact 'description.

Among the principal objects which the presentl invention has in view are: to prevent leakage incident to the accumulation of water between the outer and inner meinbers of a roof or sidewall construction; to avoid injury to roof and side wall construction incident to the action of frost or accumulated moisture between the membersy Drawings.

Figure 1 is a top plan view of a roofing block constructed and arranged in accord-y ance with the present invention;

Fig. 2 is a reverse view of the same, the view being taken from the under side of said block; j v

Fig. 3 is a sectionV showing a fragment of a roof construction employing blocks and surface coating therefor constructed and arranged in accordance with the present invention, the section being taken as on the line 8f3 in Fig. 1; i

Fig. 4 is a detail View showing a block constructed and arranged in accordance with Y the present invention and as installed ink a building structure. l

l Description.

fabric l0 of one or more plies. T he various layers of papers may be cemented in a manner conventional with this art. Heretofore some sort vof, wearing surface has been applied over the fabric 10. This wearingr surface has at'timesconsisted of flat vitreous tile disposed directly upon the fabric 10. The interstices between the tiles have usually'` been lled 'with some suitable forni of liquid j@ n -cement,preferablylasphalticfce en ArBesit knownithat I, J aims -fI-Iaavnr tGnir- .1` FIN, a citizen of the United Statesga'nd'sa j icernejnt, `vwaterlhas 1fac'('z'iini'ul"ated of a sidewall. l 'mannen the-legs 12 may be scarted or pro- Y Either j rea-ter this water has frozen, the expansion incii tile construction which in time has produced leakagev in the roof structure. Y. In the present yinvention this is avoide by providing the blocks 11 as substitutes for the above-mentioned tiles, and by forining on the under side of the blocks l1, vpil-l lars l2 on which the blocks rest, .the body ofthe blocks'beingthus separated frointhe outer surface of'the fabric 10. The blocks 11 may be constructed ofV vitreous material or 0f cement, and the body thereof maybe formed relatively thin or thick. 1f the body is thin, it is deemed wise to provide reinforcing webs 13 extending between and connecting the pillars 12. lVhen these webs are used, care is exercised to insure the for- ,Y mation of arched openings 14 therefoig'the 'reference to the former state ofthe art.

That is, asplialtic cement may be poured in f the j oints. the blocks becovered with a surface coating 15 of suitable cement concrete The ctenttiieret'has dispiacediihe fil' 61 b'kn' t :ftl'i`e"same, permitting thereafter the introducf tion of-water between the fabric 1 0 and the a l eol It is preferred, however, that thickness of the monolithic coating thus vnectingthe roof structure with a parapet,

coping. or side wall 18 of a building.

lVliile the invention has been described with lreference to its use as a covering for roofs, it will be understood that it may be applied with equal lfacilitv to the facing lVhenemploying it in this vided with anclioringdeviccs of any-'con- 'v ventional character for securing to walls yor surfaces most'adapted for 'employment-of this invention 'Ilie blocks may also be preings.

"Zaz'ms.V

l. The combination of a monolithic sur-` face, and a Vsupport; thereforv embodying a plurality of blocks, a Water-proof, founda-- tion, means interposed between said foundation and the body of said blocks `for providing a continuous Adrainage space between Y said foundation and the body of said blocks,

copies of 4this patentV may be `obtained for blocks, and a series of .brace members for reinforcing said supporting members.`

2. The combination of ainonolithic surface and a-plurality of blocks for supporting o saidvsurface, said blocks having each a plurality Vof supporting pillars vand arched rein'orcing,- Webs, connecting said pillars; a Water-proof bed for supporting said blocks; and means for securing said blocks in fixed position, said means embodying perfor-ations formed in saidzpillars for receiving suitable fastening devices adapted to be driveninto Y said bed. sald means embodying a series of supporte r ing members integrally formed on said i JAMESHARVEY GRIFFIN., f.

five cents each, by addressing'thevfcomxnissioner oyartents, Washintmnn. c. r Y A Y 

